PMID- 34099720 OWN - NLM STAT- MEDLINE DCOM- 20210622 LR - 20240402 IS - 2041-1723 (Electronic) IS - 2041-1723 (Linking) VI - 12 IP - 1 DP - 2021 Jun 7 TI - Deep learning boosts sensitivity of mass spectrometry-based immunopeptidomics. PG - 3346 LID - 10.1038/s41467-021-23713-9 [doi] LID - 3346 AB - Characterizing the human leukocyte antigen (HLA) bound ligandome by mass spectrometry (MS) holds great promise for developing vaccines and drugs for immune-oncology. Still, the identification of non-tryptic peptides presents substantial computational challenges. To address these, we synthesized and analyzed >300,000 peptides by multi-modal LC-MS/MS within the ProteomeTools project representing HLA class I & II ligands and products of the proteases AspN and LysN. The resulting data enabled training of a single model using the deep learning framework Prosit, allowing the accurate prediction of fragment ion spectra for tryptic and non-tryptic peptides. Applying Prosit demonstrates that the identification of HLA peptides can be improved up to 7-fold, that 87% of the proposed proteasomally spliced HLA peptides may be incorrect and that dozens of additional immunogenic neo-epitopes can be identified from patient tumors in published data. Together, the provided peptides, spectra and computational tools substantially expand the analytical depth of immunopeptidomics workflows. FAU - Wilhelm, Mathias AU - Wilhelm M AUID- ORCID: 0000-0002-9224-3258 AD - Computational Mass Spectrometry, Technical University of Munich (TUM), Freising, Germany. mathias.wilhelm@tum.de. AD - Chair of Proteomics and Bioanalytics, Technical University of Munich (TUM), Freising, Germany. mathias.wilhelm@tum.de. FAU - Zolg, Daniel P AU - Zolg DP AD - Chair of Proteomics and Bioanalytics, Technical University of Munich (TUM), Freising, Germany. FAU - Graber, Michael AU - Graber M AD - Chair of Proteomics and Bioanalytics, Technical University of Munich (TUM), Freising, Germany. FAU - Gessulat, Siegfried AU - Gessulat S AUID- ORCID: 0000-0001-5530-0674 AD - Chair of Proteomics and Bioanalytics, Technical University of Munich (TUM), Freising, Germany. FAU - Schmidt, Tobias AU - Schmidt T AUID- ORCID: 0000-0002-1883-6514 AD - Chair of Proteomics and Bioanalytics, Technical University of Munich (TUM), Freising, Germany. FAU - Schnatbaum, Karsten AU - Schnatbaum K AD - JPT Peptide Technologies GmbH, Berlin, Germany. FAU - Schwencke-Westphal, Celina AU - Schwencke-Westphal C AUID- ORCID: 0000-0002-5105-4290 AD - Klinik und Poliklinik fur Innere Medizin III, Klinikum rechts der Isar, School of Medicine, Technical University of Munich (TUM), Munich, Germany. AD - German Cancer Consortium (DKTK), partner site Munich; and German Cancer Research Center (DKFZ), Heidelberg, Germany. AD - Center for Translational Cancer Research (TranslaTUM), TUM School of Medicine, Technical University of Munich (TUM), Munich, Germany. FAU - Seifert, Philipp AU - Seifert P AD - Klinik und Poliklinik fur Innere Medizin III, Klinikum rechts der Isar, School of Medicine, Technical University of Munich (TUM), Munich, Germany. AD - Center for Translational Cancer Research (TranslaTUM), TUM School of Medicine, Technical University of Munich (TUM), Munich, Germany. FAU - de Andrade Kratzig, Niklas AU - de Andrade Kratzig N AD - Center for Translational Cancer Research (TranslaTUM), TUM School of Medicine, Technical University of Munich (TUM), Munich, Germany. AD - Institute of Molecular Oncology and Functional Genomics, TUM School of Medicine, Technical University of Munich (TUM), Munich, Germany. AD - Klinik und Poliklinik fur Innere Medizin II, Klinikum rechts der Isar, School of Medicine, Technical University of Munich (TUM), Munich, Germany. FAU - Zerweck, Johannes AU - Zerweck J AD - JPT Peptide Technologies GmbH, Berlin, Germany. FAU - Knaute, Tobias AU - Knaute T AD - JPT Peptide Technologies GmbH, Berlin, Germany. FAU - Braunlein, Eva AU - Braunlein E AD - Klinik und Poliklinik fur Innere Medizin III, Klinikum rechts der Isar, School of Medicine, Technical University of Munich (TUM), Munich, Germany. AD - Center for Translational Cancer Research (TranslaTUM), TUM School of Medicine, Technical University of Munich (TUM), Munich, Germany. FAU - Samaras, Patroklos AU - Samaras P AUID- ORCID: 0000-0001-6042-1585 AD - Chair of Proteomics and Bioanalytics, Technical University of Munich (TUM), Freising, Germany. FAU - Lautenbacher, Ludwig AU - Lautenbacher L AUID- ORCID: 0000-0002-1540-5911 AD - Chair of Proteomics and Bioanalytics, Technical University of Munich (TUM), Freising, Germany. FAU - Klaeger, Susan AU - Klaeger S AUID- ORCID: 0000-0002-0074-5163 AD - Broad Institute of MIT and Harvard, Cambridge, MA, USA. FAU - Wenschuh, Holger AU - Wenschuh H AD - JPT Peptide Technologies GmbH, Berlin, Germany. FAU - Rad, Roland AU - Rad R AUID- ORCID: 0000-0002-6849-9659 AD - Center for Translational Cancer Research (TranslaTUM), TUM School of Medicine, Technical University of Munich (TUM), Munich, Germany. AD - Institute of Molecular Oncology and Functional Genomics, TUM School of Medicine, Technical University of Munich (TUM), Munich, Germany. AD - Klinik und Poliklinik fur Innere Medizin II, Klinikum rechts der Isar, School of Medicine, Technical University of Munich (TUM), Munich, Germany. FAU - Delanghe, Bernard AU - Delanghe B AD - Thermo Fisher Scientific, Bremen, Germany. FAU - Huhmer, Andreas AU - Huhmer A AD - Thermo Fisher Scientific, San Jose, CA, USA. FAU - Carr, Steven A AU - Carr SA AUID- ORCID: 0000-0002-7203-4299 AD - Broad Institute of MIT and Harvard, Cambridge, MA, USA. FAU - Clauser, Karl R AU - Clauser KR AD - Broad Institute of MIT and Harvard, Cambridge, MA, USA. FAU - Krackhardt, Angela M AU - Krackhardt AM AUID- ORCID: 0000-0002-4752-0543 AD - Klinik und Poliklinik fur Innere Medizin III, Klinikum rechts der Isar, School of Medicine, Technical University of Munich (TUM), Munich, Germany. AD - German Cancer Consortium (DKTK), partner site Munich; and German Cancer Research Center (DKFZ), Heidelberg, Germany. AD - Institute of Molecular Oncology and Functional Genomics, TUM School of Medicine, Technical University of Munich (TUM), Munich, Germany. FAU - Reimer, Ulf AU - Reimer U AD - JPT Peptide Technologies GmbH, Berlin, Germany. FAU - Kuster, Bernhard AU - Kuster B AUID- ORCID: 0000-0002-9094-1677 AD - Chair of Proteomics and Bioanalytics, Technical University of Munich (TUM), Freising, Germany. kuster@tum.de. AD - Bavarian Biomolecular Mass Spectrometry Center (BayBioMS), Technical University of Munich (TUM), Freising, Germany. kuster@tum.de. LA - eng GR - U01 CA214125/CA/NCI NIH HHS/United States GR - U24 CA210986/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20210607 PL - England TA - Nat Commun JT - Nature communications JID - 101528555 RN - 0 (ASPN protein, human) RN - 0 (Epitopes) RN - 0 (Extracellular Matrix Proteins) RN - 0 (HLA Antigens) RN - 0 (Histocompatibility Antigens Class I) RN - 0 (Histocompatibility Antigens Class II) RN - 0 (Ligands) RN - 0 (Peptides) SB - IM EIN - Nat Commun. 2021 Jun 23;12(1):4002. PMID: 34162890 MH - Cell Line MH - *Deep Learning MH - Epitopes MH - Extracellular Matrix Proteins/metabolism MH - HLA Antigens/immunology MH - Histocompatibility Antigens Class I/metabolism MH - Histocompatibility Antigens Class II/metabolism MH - Humans MH - Ligands MH - Mass Spectrometry MH - Molecular Medicine MH - Peptides/*immunology/metabolism MH - Proteomics MH - Tandem Mass Spectrometry/*methods PMC - PMC8184761 COIS- D.P.Z., S.G., T.S., M.W., and B.K. are founders and shareholders of MSAID GmbH. M.W. and B.K. are also founders and shareholders of OmicScouts GmbH, they have no operational role in both companies. K.S., J.Z., T.K., and U.R. are employees of JPT Peptide Technologies. B.D. and A.H. are employees of Thermo Fisher Scientific. During the study, S.G. was an employee of SAP SE. S.A.C. is a member of the scientific advisory boards of Kymera, PTM BioLabs, Seer and BioAnalytix and a scientific advisor to Pfizer and Biogen. EDAT- 2021/06/09 06:00 MHDA- 2021/06/23 06:00 PMCR- 2021/06/07 CRDT- 2021/06/08 06:11 PHST- 2020/11/10 00:00 [received] PHST- 2021/05/11 00:00 [accepted] PHST- 2021/06/08 06:11 [entrez] PHST- 2021/06/09 06:00 [pubmed] PHST- 2021/06/23 06:00 [medline] PHST- 2021/06/07 00:00 [pmc-release] AID - 10.1038/s41467-021-23713-9 [pii] AID - 23713 [pii] AID - 10.1038/s41467-021-23713-9 [doi] PST - epublish SO - Nat Commun. 2021 Jun 7;12(1):3346. doi: 10.1038/s41467-021-23713-9.